What does SELECTION mean?

noun

1. the act of choosing or selecting“your choice of colors was unfortunate”
2. an assortment of things from which a choice can be made“the store carried a large selection of shoes”
3. the person or thing chosen or selected“he was my pick for mayor”
4. a natural process resulting in the evolution of organisms best adapted to the environment
5. a passage selected from a larger work“he presented excerpts from William James' philosophical writings”